baber/WOPTO huggingface dataset:
Patent GB-982790-A (GB)
Title: Method and apparatus for the selection and reproduction of documents
IPC: G06K17/00
Filed: 1963-09-12
Abstract: 982,790. Statistical apparatus. P. C. V. BAILLOD. Sept. 12, 1963 [Sept. 13, 1962], No. 36029/63. Heading G4M. A series of documents 11, Fig. 1, are recorded on a length of microfilm together with a plurality of code elements 16-19 representing characteristics of the document, the code elements 16-19 are compared with a pattern of code elements corresponding to a document to be reproduced as the film passes continuously by a scanning station, and upon matching of the elements 16-19 with the elements of the pattern in any order, the associated document is photographed without stopping the film. An image 12a, Fig. 2, of the code elements is projected on to a set of selector plates 27-30 which are punched in accordance with a desired set of characteristics. Holes 27a-30a are blacked out in succession by strip 14, Fig. 1, and photo-cells 33-36 produce an output when a code element 16-19 in register with a plate 27-30 has corresponding markings and prevents any light from reaching the cell. A photo-cell 31 operates switch 37, Fig. 3, to energize a relay 39 when a transparent strip 13, Fig. 1, associated with each set of code elements illuminates either of holes 24a, 24b. As the code elements pass the scanning station there are seven instants at which one or more of elements 16-19 are in register with one or more of plates 27-30. If during any of these instants any of photo-cells 33-36 are blacked out, the corresponding switch 42, 43, 47 or 51 is operated and the associated relay 48, 44, 42 or 55 locks up. When all the elements 16-19 have passed the scanning position an opaque mark 15a obscures photo-cell 32 and if all of relays 48, 44, 52, 55 have been energized a control circuit 60 operates a shutter or flash-lamp 61 to photograph the associated document. Alternatively a document may be reproduced if it only-possesses certain ones of the characteristics. Selector plates 27-30 may be replaced by a punched tape which may be advanced after each complete run-through of the microfilm to provide a new selection pattern.
Patent GB-797523-A (GB)
Title: Composite laminated sheet materials
IPC: B32B27/00
Filed: 1954-12-15
Abstract: 797,523. Laminates; coated fibrous materials. AMERICAN VISCOSE CORPORATION. Dec. 15, 1954 [Dec. 24, 1953], No. 36312/54. Drawings to Specification. Class 140. A laminate consists of at least one layer of a web, a permeable fibrous elastomeric material having uniform tensile strength and elasticity in the plane of the material and consisting of randomly disposed fibres bonded together at their points of contact, formed by the method claimed in Specification 794,725, and at least one layer of a different material. This material may be elastic or non-elastic, fibrous or non- fibrous, stretchable or non-stretchable, flexible or rigid, e.g. paper which may be creped or corrugated paper-like sheets formed of asbestos, glass, or mineral fibres, felts, textiles formed of natural artificial, or synthetic fibres, e.g. cotton, rayon, glass, mineral fibre, needled or pile fabrics, non-woven, including knitted textiles, leather, synthetic resins such as polythene, vinyl compounds, e.g. polyvinyl chloride, regenerated cellulose, cellulose ethers or esters, natural or synthetic rubber, foam or sponge rubber, elastic silicones, metal, wood, wallboard, natural or synthetic stone, ceramic or plastic tile. The layers may be bonded together by vulcanizing or curing the porous fibrous elastomeric material. In examples, woven material sandwiches or is sandwiched between the porous fibrous elastomeric material. For elastic laminates, a flexible sheet material is bonded at spaced intervals to the porous fibrous elastomeric material, typically while this material is under tension. If desired, the flexible sheet may be corrugated, pleated, woven, or bunched in one or two transverse directions. Such laminates may be used for bathing and foundation garments, elastic stockings, angle braces, belts and other articles of dress. By backfilling, coating or impregnating the porous fibrous elastomeric material with rubber latex, silicone or vinyl resins, cellulose derivatives, casein, gelatin, starch and clay, the permeability and porosity can be altered. Thus for a belt the coating, e.g. of rubber latex, may enclose the fibrous elastomeric material while for a watch strap or garter one surface thereof may be uncoated to provide a non-slip surface. A skinned meat carcase wrapping may be formed by attaching an absorbent knitted cotton or rayon fabric to the fibrous elastomeric material which is then back-filled with rubber latex. In a modification, a laminate of limited stretchability may be formed by depositing the fibres of the porous elastomeric material on a permeable non- stretchable fibrous material and forming the elastomeric material in situ, the laminate then being corrugated or creped. Padding for upholstery purposes may be produced by bonding a layer of the fibrous elastomeric material to a layer of sponge or foam rubber.
Patent GB-752786-A (GB)
Title: Improvements in or relating to electric cable manufacturing machines
Inventor: SKELLERN HAROLD
IPC: H01B13/02
Filed: 1954-12-16
Abstract: 752,786. Making electric cables. STANDARD TELEPHONES & CABLES, Ltd. Dec. 16, 1954, No. 36420/54. Class 109. A machine for manufacturing electric cables, furnished with means for loading drums 4 carrying cable core components into appropriate positions on a rotatable carriage 1 forming part of a cable stranding-machine, is characterized in that at each of the loading positions, brackets 3 integral with the rotatable carriage 1 are provided, each bracket 3 including bearings 11 to receive spindles 5, carrying the drums 4, guide ramps 6, 61 along which the spindles 5 may pass when the drums are rolled at floor level 7 towards the machine, and positive means, e.g. a latch 12, for retaining each spindle 5 in its bearing 11 when the drums have been rolled into operative position. Guide rails 9, 9<SP>1</SP> guide the flanges of the drums 4 and hence the spindles 5 towards the ramps 6, 6<SP>1</SP>. The latches 12 are each governed by a hand grip 13 associated with a spring-biased lever system, which may be locked in an operative or inoperative position by a bar 26 in notches 24 or 25.
Patent GB-824865-A (GB)
Title: Improvements in or relating to a stabilizing composition
Inventor: ELLIOTT STANLEY BENNETT
IPC: C08K5/053
Filed: 1956-11-28
Abstract: A composition suitable for stabilizing polymers of halogenated hydrocarbons such as vinyl chloride and vinylidene chloride homopolymers and copolymers against the effects of heat and/or light, comprises an intimate mixture of a colourless Friedel-Crafts type catalyst, or of a cation progenitor thereof, and a primary aliphatic polyhydric alcohol having at least three hydroxyl groups of which at least two hydroxyl groups are free and a boiling point not less than 250 DEG  F.  The catalyst or cation progenitor thereof may be a halide, hydroxide, oxide, carbonate, alcoholate or organic salt of aluminium, antimony, zinc, tin, titanium, zirconium, beryllium, boron, cadmium or bismuth.  The polyhydric alcohol may be trimethylolethane, trimethylolpropane, tetramethylolcyclohexanol, pentaerythritol, dipentaerythritol, or tripentaerythritol.  The composition may also include a hydrogen chloride accepter such as an oxide, hydroxide or carbonate of an alkaline earth metal or lead, an alkaline earth metal or lead soap or an epoxy compound.  The polyhydric alcohols may be used in the form of metal alcoholates which, in the presence of a hydrogen halide, form free polyhydric alcohols and Friedel-Crafts type catalysts or hydrogen chloride accepter metals.  Compositions containing polymers and stabilizing composition may also contain a plasticizer such as dioctyl phthalate and a lubricant such as stearic acid.
Patent GB-409834-A (GB)
Title: Improvements in air cooled condensers for aircraft
IPC: F28B1/06
Filed: 1932-12-28
Abstract: 409,834. Surface condensers. ELLOR, J. E., Grandell, South Drive, Chain Lane, Mickleover, Derby. Dec. 28, 1932, No. 36676. [Class 64 (iii).] A steam condenser for an aircraft enginecooling system is fitted in or on to the wing and has solid fins projecting from its surface edge on to the airstream. Fig. 3 shows a condenser built into the leading edge of the wing and comprising a chamber fitted with baffle plates b and a safety valve e. Solid fins f deeper at the rear than at the front are sweated onto the surface. Fig. 6 shows a modification in which the upper edges of the fins f lie on the contour of the wing and are shrouded by plates g having an orifice h at the leading edge of such size that the incoming air can continually expand as it flows past the fins. Alternatively, the condenser may be formed as a shallow body carried in a recess in the upper surface of the wing or on top thereof, or elsewhere in or under the wing.
Patent GB-1121923-A (GB)
Title: Method of manufacture using electrical discharge machining apparatus
IPC: B23K11/00
Filed: 1966-08-18
Abstract: In an electro-erosion machining process the workpiece 12 and/or the electrode 10 are machined and provided with a hard surface in successive steps.  The workpiece 12 is disposed in a dielectric bath 16 supplied from a source 18 including filtering and cooling means. Electrode 10 has a carbon tip 62 and is fed by a mechanism 14 controlled by a motor 30 in response to the gap voltage which is compared at 32 with a reference voltage from source 34.  Rate of feed is adjustable by resistor 40.  The working voltage is supplied from a high frequency A.C. source 44 through transformer 46 including a tank circuit 48 to provide storage energy and power factor compensation. A tapped secondary winding 50 is connected through tapped resistor 54 and coaxial cable 52 to the <PICT:1121923/C6-C7/1> erosion gap. Resistor 54 is adjusted to determine the surface finish.  Rectifier 58 produces pulsating D.C. at the gap, but this rectifier may be shunted by switch 60, to provide for A.C. working.  After initial machining of the workpiece 12, the dielectric fluid is drained from the tank, a paste-like substance, comprising particles of titanium or tungsten carbide in a solvent such as trichlorethylene, is applied to the machined surfaces of both the electrode and workpiece, and the machining process is repeated preferably at a lower voltage.  The heat generated melts the substance to provide a hard wear-resisting surface on both the electrode and workpiece.  Instead of a paste, a dielectric fluid containing hardening contaminants may be used. By the use of D.C. of the correct polarity, only the workpiece or the electrode need be hardened.  A polarity reversing switch may be provided.  The invention may be used to make cooperating punch and die sets.
Patent GB-1102040-A (GB)
Title: Magnetohydrodynamic generators
IPC: H02K44/16
Filed: 1965-08-27
Abstract: 1,102,040. Generators operating by electromagnetic interaction with fluids. SIEMENS SCHUCKERTWERKE A.G. 27 Aug., 1965 [27 Aug., 1964], No. 37064/65. Heading H2A. A MHD generator has two coaxial annular field coils with the generator duct lying in the radial gap between the coils so that the plasma flow path is ring-shaped. In operation, the coils are excited to produce oppositely directed magnetic fields, thereby equalizing the forces on the coils and providing a resultant magnetic field in the duct. The diverging duct may be helical or flat-spiral shaped and is constructed of water-cooled walls of insulating material with water-cooled stainless steel electrode segments embedded in opposite side walls. The opposed electrode pairs are connected to individual inverters whose outputs are combined in a transformer. Each field coil comprises an exciter winding, which may be of superconducting material, with cooled supporting rings adjacent the outer periphery of the outer winding and adjacent the inner periphery of the inner winding. It is preferable that the resultant magnetic field within the inner coil is zero and to obtain equilibrium of the magnetic forces between the two coils, the inner coil may be capable of radial movement. Alternatively shunting cover-plates may be provided around the duct to distort the magnetic field so that a balance position can be obtained.
Patent GB-808428-A (GB)
Title: Improvements in or relating to devices for determining the relative deviation of the mean frequencies of pulse sources
IPC: G01R23/09
Filed: 1955-12-28
Abstract: 808,428. Automatic thickness or frequency control systems. PHILIPS ELECTRICAL INDUSTRIES Ltd. Dec. 28, 1955 [Dec. 31, 1954], No. 37122/55. Class 38 (4). [Also in Groups XL (b) and XL (c)] The frequency difference between two pulse sources 1, 2 constituted by radiation detectors is measured by applying the pulses with opposite polarities via capacitors 3, 4 to the junction points of a pair of series-connected diodes 5, 7 and 6, 8 to a common capacitor 12 with meter 13 and leakage resistor 11 across it, the shunt diodes 7, 8 being biased by voltage sources 9, 10 of opposite polarity to act as limiters. The bias sources 9, 10 may be replaced by parallel R-C circuits producing self-bias, either at 9, 10 or between the diodes of each series pair. The pulse-producing detectors 1, 2 may be energized by α-, #-, γ- or X-rays. The variable instantaneous or mean thickness of moving material interposed between the radiation source and one detector may be measured against a standard thickness interposed in front of the other detector, and the source and detectors may be moved to and fro over the width of the material. Alternatively thickness can be measured by reflected or " back-scattered " radiation. The meter output can be used for thickness control by acting on rollers forming the material. A measure of control of the radial thickness of extruded tubular material may be obtained by three readiation detectors at angles of 120 degrees outside a tube of material being formed by a piston, the latter containing a radiation source, each pair of detectors having a rectifier circuit controlling the radial position of the piston. The frequency meter, operating up to 10 Mc/s., may also be used for keeping constant the mean frequency of frequency-modulated transmitters.
Patent GB-1275807-A (GB)
Title: Urethane
IPC: C07D295/13
Filed: 1969-07-24
Abstract: 1275807 Urethane FARBWERKE, HOECHST AG 24 July 1969 [25 July 1968] 37297/69 Heading C2C The novel urethane of Formula I is prepared by reacting a reactive derivative, e.g. a halide or active ester, of the carbonic semiester of Formula II with 2-piperidinoethylamine. The compound I may be converted into an acid addition salt by reaction with an acid. Cinnamyl p-nitrophenyl carbonate is prepared by reacting cinnamyl alcohol with chlorocarbonic acid p-nitrophenyl ester. Pharmaceutical compositions having a local anaesthetic action comprise the compound I, or a non-toxic acid addition salt thereof, in conjunction with an inert carrier.
Patent GB-904031-A (GB)
Title: Improvements in control arrangements for electrical amplifiers
IPC: H03G1/00
Filed: 1958-11-21
Abstract: 904,031. Controlling gain photo-electrically. PHILIPS ELECTRICAL INDUSTRIES Ltd. Nov. 21, 1958 [Nov. 26, 1957; May 8, 1958], No. 37559/58. Class 40 (3). [Also in Group XL (a)] The output of an amplifier 2 controls a light source (a neon glow tube) 6 which reduces the impedance of a photo-sensitive semi-conductor (e.g. cadmium sulphide) shunting the input if the input signal is large enough to overdrive the amplifier. Glass envelopes containing the light source and resistor may be fused together to form a single-unit (Fig. 2, not shown), or they may be in a cylindrical envelope 31 provided with a mesh 30 which allows passage of light from the glow tube 6 to the photo-register 4 while preventing capacitive transfer of voltage pulses from the one to the other.
Patent GB-341656-A (GB)
Title: Improvements in boxes or crates for fragile articles
IPC: B65D85/30
Filed: 1929-12-07
Abstract: 341,656. Crates for bottles &c. COATES, C. F., (trading as COATES & APPLEBY), 105, Hospital Street, Birming- ham. Dec. 7, 1929, No. 37569. [Class 18.] A crate for milk bottles &c. consists of a skeleton metal frame d, e, metal top and bottom plates f, a with openings f<4>, a2 within which the bottles &c. fit, the openings f<4> being surrounded by flexible metal tongues i bent round split rings j and serving to clamp the bottles &c. resiliently.
Patent GB-1270997-A (GB)
Title: Method of insulating thin films
Inventor: HAMANN CLAUS
IPC: H01B12/14
Filed: 1969-07-25
Abstract: 1,270,997. Insulation. KOMBINAT ROBOTRON VEB. 25 July, 1969, No. 37596/69. Heading HIA. Thin superconducting, semiconducting or magnetizable films operating at low temperature are insulated by a phthalocyanin or mixtures thereof.
Patent GB-1281017-A (GB)
Title: Meta-stable austenitic stainless steels of improved hot workability
Inventor: BRICKNER KENNETH GERARD
IPC: C22C38/00
Filed: 1969-07-28
Abstract: 1281017 Austenitic stainless steel UNITED STATES STEEL CORP 28 July 1969 37819/69 Heading C7A Meta-stable austenitic stainless steel with good hot workability and ductility comprises:- C 0À11-0À18% Cr 14-19% Mn 5À5-8% Ni 4À5-6% N 0À015-0À08% Mo up to 0À5% P 0À04% max. Si 1% max. and S 0À04% max., the balance apart from impurities such as up to 0À1% Co, being Fe and has maximum N contents of 0À04% for C less than 0À125% and 0À06% for C more than 0À145%. The steel may be processed by hot working at 2200-2250‹F. optionally followed by cold working.
Patent GB-1397314-A (GB)
Title: Continuous preparation of aromatic hydrazo compounds
IPC: C07C243/22
Filed: 1972-08-14
Abstract: 1397314 Hydrazo compounds HOECHST AG 14 Aug 1972 [14 Aug 1971] 37845/72 Heading C2C Aromatic hydrazo compounds are prepared by continuously introducing a solution of an aromatic nitro compound in an inert organic solvent, an aqueous solution of an alkali metal hydroxide and zinc dust into the first stage of a cascade apparatus comprising at least four stages, and continuously introducing water and zinc dust into the third stage of the apparatus, the amount of zinc dust introduced into the first stage being from 70 to 95% by weight of the total amount introduced and the temperature of each stage being maintained at 70 to 90 C. In examples, 2,2<SP>1</SP>-dichlorohydrazobenzene, 2,2<SP>1</SP>- dimethoxyhydrazobenzene and 2,2<SP>1</SP>-dimethylhydrazobenzene are prepared from o-nitrochlorobenzene, o-nitroanisole and o-nitrotoluene, respectively. The products may be rearranged to the corresponding benzidines.
Patent GB-1362711-A (GB)
Title: Anti-skid systems
IPC: B60T8/1763
Filed: 1971-08-12
Abstract: 1362711 Anti-skid braking system ROBERT BOSCH GmbH 12 Aug 1971 [13 Aug 1970] 37859/71 Heading F2F An anti-skid braking system for vehicles comprises a source of fluid braking pressure and a brake cylinder connected by way of an antibraking valve assembly 4 which is under the control of an electric wheel lock sensor in a brake line to the source of fluid pressure, the valve assembly interrupting the connection between the source and brake cylinder on receipt of an electrical signal from the sensor. The antilocking valve assembly comprises a piston 16 operative to open and close a control valve 14, the piston 16 forming a movable wall between two working chambers 17, 18 of which one is constantly connected to a source of pressure medium in a line connected to the input of the master cylinder and the other 18 of which is connected by way of a solenoid actuated valve 20 to the same or a different source of pressure medium the solenoid actuated valve 20 being operable by the output of the sensor. The pressures in the first and second working chambers act on the piston 16 in directions to open and to close the control valve 4 respectively. In the construction shown the braking system is activated by pedal operated valve 1, pneumatic pressure flowing therethrough actuating a differential piston type master cylinder 7. In a further embodiment (Fig. 2, not shown) the pneumatic line to the working chamber 17 is broken by a valve which is sensitive to the loading of the vehicle.
Patent GB-953596-A (GB)
Title: Improvements in and relating to the defibering of asbestos and like materials
Inventor: BACHER JAN PETERSON
IPC: B02C17/04
Filed: 1961-10-23
Abstract: 953,596. Rod mills. F. L. SMIDTH & CO. A.S. Aug. 2, 1962 [Oct. 23, 1961], No. 37976/61. Heading B2A. A method of defibering fibrous material, e.g. asbestos or waste paper, for the manufacture of fibre-reinforced cement products comprises adding water to the material to bring the water content of the mix to between 10 and 50%, preferably to between 15 and 25%, and subsequently feeding the mix to a continuously working rod mill. Preferably, the rods occupy between 25 and 45% of the cavity of the mill and the charge of material to the mill is controlled so that at any time the material near the mill outlet occupies the cavities between the rods but does not extend appreciably above the rods. The mill is rotated at a speed preferably between 50 and 80% of the critical speed of the mill. A rod mill for carrying out the method comprises a cylindrical shell 1 having a feed trunnion 4 and outlet openings 16 which are distributed uniformly around the mill periphery. The openings 16 are surrounded by a stationary casing 17 having a discharge opening 18. Each opening has an area of at least 100 square centimetres. The axial extent of each opening does not differ substantially from its circumferential extent. The ends of the rods adjacent the outlet end of the mill have a diameter which is between one-half and fourfifths of the diameter of the rods over the greater part of their length and these rod ends are either of cylindrical or frusto-conical form. The mill has linings 10, 11, 12 and 13, the lining being connected to a cover plate 14 by bolts 15.
Patent GB-1339118-A (GB)
Title: Method of producing thermally and acoustically insulated pipes
IPC: B29C39/10
Filed: 1972-08-15
Abstract: 1339118 Insulated pipes KABLE-UND METALLWERKE GUTEHOFFNUNGSHUTTE AG 15 Aug 1972 [19 Aug 1971] 38016/72 Addition to 1277865 Heading F2P In the method of making an insulated pipe in accordance with Specification 1,277,865, (wherein a spiral spacer is formed about a metal pipe, a strip extending longitudinally of the pipe is formed into a split tube around the spacer, a self foaming synthetic resin is introduced into the split tube, and the edges of the split tube are joined together), the strip of which the split tube is made is of copolymer material at least on the side facing the foaming synthetic resin and is adhesively bonded thereto. The foil strip is preferably wholly copolymer but may have one face coated with copolymer. As described the bonding is by heat softening of the foil strip either by exothermic reaction of the foaming mixture or by the application of hot rolls. Materials.-The inner pipe is of metal (e.g. copper); the foam may be polyurethane; the foil strip may be of, or comprise, an ethylene copolymer, and may be pigmented or painted to render it opaque.